Davros is dead af after spewing cum everywhere in Resurrection of the Daleks, but his corpse is rescued by some dude who runs a company called TAI - TransAllied Inc. - and his historian wife who has a fetish for researching every time Davros took a shit, in the hopes that they can revive him to enslave him as their bitch. Davros alives himself through pure badassery and basically does the whole Power of the Daleks routine of pretending to cooperate to gain a foothold in the company and then take over it. And he does this with no Daleks, because as I mentioned, pure badassery.

Pies turns up and honestly doesn't really do all that much, but who gives a shit this is Davros' story, DEAL WITH IT.

Turns out Davros didn't come up with the concept for the Daleks; his fellow colleague and suspected fuckbuddy Shan did, and he basically took credit for her idea and kept her hushed by executing her. And they say romance is dead.